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You mean the firetruck for 1st one? What role did it have? 
2nd one looks more like a crane on a trailer, no?
last one in 1st message is for the small vehicle that hauls bagages? I do not think that it is worth listing it.
The other Douglas is not worth mentionning I think, these vehicles were not so well visible and did not had any role (in addition, as they are not really cars, there is even less interest of including background ones if they are only very briefly visible).
I'll remake captures from the DVD of the fire truck and Mercedes-Benz at the same time as some others vehicles that were reported as missing.
2nd one looks more like a crane on a trailer, no?
last one in 1st message is for the small vehicle that hauls bagages? I do not think that it is worth listing it.
The other Douglas is not worth mentionning I think, these vehicles were not so well visible and did not had any role (in addition, as they are not really cars, there is even less interest of including background ones if they are only very briefly visible).
I'll remake captures from the DVD of the fire truck and Mercedes-Benz at the same time as some others vehicles that were reported as missing.